4-Amino-2-cyano-3-(difluoromethyl)pyridine-5-carbonyl chloride
3-(Difluoromethyl)-6-methoxy-2-nitropyridine-4-sulfonyl chloride
5-(Chloromethyl)-2-methyl-4-nitro-3-(trifluoromethoxy)pyridine
Methyl 3-chloro-5-(difluoromethyl)-4-methylpyridine-2-acetate